# 这个流程怎么走的, 调试工具, debug ,
# break 跳出几层循环

# 输出 0 - 9
i = 0
while i < 10:
    print(i)
    i = i + 1
    while i < 5:
        print('-----内部-----',i)
        i += 1
        if i == 3:
            break
else:
    print("else 语句：" + str(i))
